Forward and reverse wiring tension balance control device and method for high-speed reciprocating wiring wire cutting

Abstract

A forward and reverse wiring tension balance control device and method for high-speed reciprocating wiring wire cutting are characterized in that the device comprises a stand column (18), wherein an upper wire arm (3) and a lower wire arm (13) are installed on the stand column, the upper wire arm (3) can move up and down on the stand column to adapt to the cutting requirements of workpieces of different thicknesses, an upper fixing wheel (6), a tension wheel (5), a wire breakage protection block (8), an upper current input block (9) and an upper positioning guide wheel (10) are installed on the upper wire arm (3), the wire breakage protection block (8) is controlled by a push rod motor (7), and the tension wheel (5) is connected with a tension sensor (4); a lower positioning wheel (11), a lower current input block (12) and a lower fixing wheel (14) are installed on the lower wire arm (13), and the lower control wheel (15) is controlled by a lead screw sliding table (16) and a stepping motor (17). The forward and reverse wiring tension balance control device and method obviously improve the high-thickness cutting stability and the consistency of workpieces cut in multiple times and can effectively reduce the wire breakage probability.

Description

technical field [0001] The invention relates to wire electric discharge cutting technology, in particular to a forward and reverse wire tension control technology in a high-speed reciprocating wire electric discharge machine tool, specifically a high-speed reciprocating wire electric discharge cutting forward and reverse Wire tension balance control device and method. Background technique [0002] With its high cost performance, my country's unique high-speed reciprocating wire electric discharge machine tool has shown huge market potential in the fields of mechanical parts processing and low-end mold processing, and has broad development prospects. However, due to the characteristic of "reciprocating wire walking" of the machine tool, the problem of the change of the tension of the electrode wire is brought about, which leads to the phenomenon of "unilateral loose wire" (the tension of the electrode wire at both ends of the wire drum is tight at one end and loose at the oth...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to adjust the tension of the wire electrode by using the elastic deformation of the wire electrode in the existing tension control device, without considering the balance state of the tension in the wire feeding system and the change of the diameter of the wire electrode, so it needs to be continuously adjusted. Control and the existing wire tension adjustment method and mechanism can not meet the high-speed wire (8-12m / s) requirements and easily cause the problem of wire breakage. Invented a high-speed reciprocating wire EDM forward and reverse wire tension balance Control device and method

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